Hi,
I’ve tried to download the MC60 OpenCPU SDK from this page:
https://www.quectel.com/ProductDownload/MC60_OpenCPU_SDK.html
File MC60_OpenCPU_GS3_SDK_V1.7_Eclipse.zip contains one more zip file with infected QFlash_V4.0.exe inside.
Virustotal report:
https://www.virustotal.com/gui/file/40cbece83b96b766f241657b1cf04f9cf0822745e08bcf9ba06f80f62007ed70/detection